Can anyone give me advice for moving to a new school?

okayy so like i don't mean to brag but at my old school i was miss popularity and i had tons of friends and everything but now im moving to a whole nother school and i dont know anyone except for this one guy ive been talking to lately!! he said that its a pretty trashy school compared to where i go and the girls there hate girls like me..im like the peppy cheerleader and there like the darkside outcast girls im kinda scared cause i think they could beat me up and i dont wanna walk into a new school hanging out with the guys cause that would give me a bad reputation...any advice??